NEW YORK (Reuters Health) - Sugar-sweetened soft drinks and
fructose are strongly tied to an increased risk of gout in men,
according to a report in the February 1st Online First issue of
the British Medical Journal. Drinking diet soft drinks, by
contrast, did not increase the risk.

Sweetened soft drinks contain large amounts of fructose, a
sugar derived from fruit, which increase levels of uric acid.
However, no studies have investigated the link between these
beverages and the risk of gout, Dr. Hyon K. Choi told Reuters
Health. These findings provide the first evidence that fructose
and fructose-rich foods are important risk factors for gout.

Choi, from the University of British Columbia in Vancouver,
and Dr. Gary Curhan, from Harvard Medical School in Boston,
used food questionnaires to assess consumption levels of soft
drinks and fructose in 46,393 men enrolled in the Health
Professionals Follow-up Study who were gout-free at study entry
and were followed for 12 years.

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During that period, 755 men developed gout, and the risk
was related directly to levels of sugar-sweetened soft drink
consumption. Compared with soft drink levels of less than 1
serving per month, consumption of 5 to 6 servings per week, 1
serving per day, and 2 or more servings per day, increased the
risk of gout by 29 percent, 45 percent, and 85 percent,
respectively.

A similar trend was noted with fructose consumption.
Compared with subjects who consumed the lowest fructose levels,
those who consumed the highest had an increased gout risk of
102 percent. Consumption of high-fructose fruits, such as
apples and oranges, was also associated with an increased risk
of gout.

Alcohol is a "well-established, strong risk factor for
gout," Choi noted. However, the strong increase in gout risk
associated with sweetened soft drinks and fructose was "rather
surprising," especially because current dietary recommendations
for gout focus on the restriction of alcohol and the amino acid
purine, but have no restrictions on sugar-sweetened soft drinks
or fructose.

In light of these findings, Choi advises doctors to steer
their gout patients and patients with high uric acid levels
away from sugary soft drinks. As for recommending reductions in
high-sugar fruits, he said the risks versus the benefits need
to be considered on a patient-by-patient basis.

Further research is needed to see if these findings also
apply to women, Choi added, and to determine if fructose is
associated with cardiovascular disease and other major
disorders related to high uric acid levels.

SOURCE: Online First issue of the British Medical Journal,
February 1, 2008.